Google Janitor interview questions

They asked me difficult coding questions, lots of shortest path stuff, array manipulation, and even a Djikstra question. I was way out of my league. And I was applying for the janitor position!

asked few basic questions about past experience and skill. Situational questions and availability. Asked wether I would be ok to do certain tasks. Background check and references required. Took around 3-4 weeks from beginning to end but was not accepted.